Dell Vostro 420 (Late 2008) - Manual (Page 23)

About Your Computer
23
Vostro 420 Back Panel Connectors
1 PS/2 mouse connector 2 VGA connector
3 USB 2.0 connectors (2) 4 link integrity light
5 network adapter connector 6 network-activity light
7 line-in connector 8 line-out connector
9 microphone connector 10 USB 2.0 connectors (4)
11 eSATA connector 12 display port
13 serial connector (9-pin) 14 PS/2 keyboard connector
4 5
10
9
6 2
7
8
12
1 3
13 14 11